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Description

The RT8206A / RT8206B dual step-down, Switch Mode Power Supply (SMPS) controller generates logic supply voltages in battery powered systems. The RT8206A/B includes two Pulse Width Modulation (PWM) controllers fixed at 5V/3.3V or adjustable from 2V to 5.5V. An optional external charge pump can be monitored through SECFB (RT8206A).

This device also features a linear regulator providing a fixed 5V output. The linear regulator provides up to 70mA output current with automatic linear regulator bootstrapping to the BYP input. The RT8206A/B includes on-board power up sequencing, the power good outputs, internal soft-start, and internal soft-discharge output that prevents negative voltages on shutdown.

Pinout :

Features

1. Wide Input Voltage Range 6V to 25V

2. Dual Fixed 5V/3.3V Outputs or Adjustable from 2V to 5.5V, 1.5% Accuracy

3. Secondary Feedback Input Maintains Charge Pump Voltage (RT8206A)

4. Independent Enable and Power Good

5. 5V Fixed LDO Output : 70mA

6. 2V Reference Voltage ±1% : 50μA

7. Constant ON-Time Control with 100ns Load Step Response

8. Frequency Selectable via TON Setting